89661944 has 16 divisors (see below), whose sum is σ = 178005600. Its totient is φ = 42193792.

The previous prime is 89661941. The next prime is 89661959. The reversal of 89661944 is 44916698.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89661941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329504 + ... + 329775.

It is an arithmetic number, because the mean of its divisors is an integer number (11125350).

Almost surely, 2^89661944 is an apocalyptic number.

It is an amenable number.

89661944 is a deficient number, since it is larger than the sum of its proper divisors (88343656).

89661944 is a wasteful number, since it uses less digits than its factorization.

89661944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659302 (or 659298 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 89661944 is about 9468.9991023339. Note that the first 3 decimals coincide. The cubic root of 89661944 is about 447.5786722268.

The spelling of 89661944 in words is "eighty-nine million, six hundred sixty-one thousand, nine hundred forty-four".